Printing press



Nov. 10, 1942. A. c. SCHULZ PRINTING PRESS Filed Sept. 9, 1940 Patented Nov. 10, 1942 UNITED STATES PATENT ()FFHCE PRINTING PRESS Armand C. "Schulz, Milwaukee, Wis. Application September 9, 1940, Serial 355,891

1 Claim.

The invention relates to improvements in printing presses and has for its primary object the provision of an improved printing press which is highly eficient in operation.

Other objects will appear hereinafter.

The invention consists of the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing forming a part of this specification, and in which- Fig. 1 is a diagrammatic plan view illustrating portions of the printing press embodying the invention; and

Fig. 2 an end view thereof.

The embodiment of the invention illustrated in the drawing comprises the usual printing plate cylinder l0 having two dampening rollers H contacting therewith as indicated. A brass roller I2 contacts with the dampening rollers H and a ductor roller l3 oscillates between the brass roller l2 and a fountain roller M operating in a water fountain l5. The construction already described constitutes an ordinary printing press arrangement for supplying moisture or water to the surfaces of printing plates on the cylinder Ill, and constitutes no part of the present invention except insofar as the same cooperates with the longitudinally vibrating distributing roller I 6 employed in conjunction therewith. The roller I 6 is equipped with mechanism, not shown, for causing it to reciprocate or vibrate longitudinally as is customary in such rollers in conjunction with the inking roller of the press. The mechanism for reciprocating or vibrating the roller it is therefore not illustrated as any of the usual mechanisms for this purpose may be employed and it has been found advisable to provide that the reciprocation or vibration be adjustable to from one to twelve inches, or more, to take care of various conditions in service.

By this arrangement it has been found that excellent printing results may be obtained by the use of a minimum of water or moisture on the dampening rollers; that the water will be distributed uniformly and evenly upon the printing plates; that the dampening rollers will be kept much cleaner during operation and, therefore, their life and usefulness prolonged; that the printing will be sharper; that the ink will not become waterlogged; that no excess of water will accumulate on the edges of a printing plate and thus serve to curl the paper; that there will be less stretching of the paper and that therefore, better registering.

While the preferred form of construction has been illustrated and described, this is capable of variation or modification Without departing from the spirit of the invention. I therefore do not wish to be limited to th precise details disclosed but desire to avail myself of such variations or modifications as fall within the scope of the appended claim.

I claim:

The combination with a printing press cylinder, of a dampening roller contacting therewith, to supply Water thereto; means for supplying water to said dampening roller including a roller contacting the dampening roller; and a distributing roller contacting with the periphery of said dampening roller at the uppermost point thereon and longitudinally vibrating relatively thereto.

ARMAND C. SCHULZ. 

